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Python2->3 Log
add: from __future__ import print_function
modify: print " " -> print (" ")
modify: print >> iuot, " -> print(" ",file=iuot)
nxyzh = int(max(nx,ny,nz)/2)
bug: nypmx = numpy.empty((1),int_type,'F')
in3.fpname[:] = fpname ->
   in3.fpname = fpname.ljust(in3.fpname.dtype.itemsize)
xrange -> range
input -> input = raw_input
